Essentials. Week by. Week. Investigations

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1 Week by Week MATHEMATICS Essentials Grade 5 WEEK 8 Math Trivia Leonard Euler (707-78) was one of the most productive writers of scientific and mathematical books and papers. Even though he was blind, he introduced a new brand of geometry called topology. He also established various notations which we still use today, such as p and the labeling of triangles. Investigations Draw a large keypad of a touch-tone telephone. Notice that there are three letters for most of the numbers. Given the following telephone numbers, what words or phrases could they spell. How many different possibilities can you find? 8 7 or What strategies could you develop to help you discover possible words? Write a secret message to a friend using the phone keypad. (.0) Using Numbers in Powerful Ways The perimeter of a rectangular office is 6 feet. What is the largest possible area for the office? What are logical whole number dimensions of the office? Eplain how you got your answer. Decimal Fraction Fun What portion of a fence still needs to be painted if 0.5 is red, 0.5 is blue and half of what is left is painted yellow? (.0) - = For Further Study Investigate the famous Konigsberg bridge problem and discover Euler s Equation on the net page. (.0) (.0)

2 Names: and Shape Shape Name Tetrahedron # of Faces # of Vertices # of Edges # of # of # of Faces Vertices Edges Cube Triangular Prism Square Pyramid Pentagonal Prism Heagonal Prism Octagonal Prism Octahedron Part II: Look for a pattern relating faces, vertices, and edges. Talk with your partner to see if you could write the formula for finding the number of edges of a given solid figure. This formula is called Euler's (pronounced "oilers") Equation. (.0, 5.0)

3 Keeping Skills Sharp. Terry has 90 dimes, How much money is this? n 8 = 600 n =?. Which is the most reasonable answer for the length of a tablecloth? 08 inches 08 feet 08 yards 5. Bananas cost 59 a pound; apples cost 99 a pound; peaches cost 89 a pound. What is the cost for two pounds of bananas, three pounds of apples and a pound of peaches? 6. Which is correct? 68 < < > Meico was founded in 5. How many years ago was this? 8. Wendy boarded the train at :5 a.m. She arrived a :0 p.m. How long was the trip? - = Solve this! There are two sizes of tables available at school. One seats eactly people. The other seats 6 people. There will be 8 students at a special luncheon. The principal would like for everyone to be seated at once with no etra, empty seats. How can she do this? Is there more than one way? How many tables of each size should be ordered? (.0,.0) 5

4 To the Teacher Geometry is the focus for this Week by Week Essentials. Students are given the opportunity to study Euler and investigate his Equation. Grade 5 WEEK 8 Using Numbers in Powerful Ways: A square will give the largest possible area and a square is a rectangle, so a 9 9 office would give an area of 8 feet. Also accept the rectangular dimension 0 feet 8 feet = 80 ft. Solve This: Table of Tables of Fraction Fun: 0.5 still needs to be painted. Mental Math Directions to Students: Number your paper from to 0. Write your answers as the questions are called out. Each question will be repeated only once Write in mied number and decimal form 5/. Nearest whole number to 8/6 5. Prime numbers between 0 and Closed figure with sets of parallel lines 7. Meters in 5 centimeters 8. Feet in 0 yards 9. How many dozen in 0? 0. Area of rectangle ft. long and 9 ft. wide 6 Keeping Skills Sharp. $ ,90., inches 5. $ < From 000: hrs. 5 min.

5 Week by Week MATHEMATICS Essentials Grade 5 WEEK 9 Math Trivia A year is the time it takes for the earth to revolve around the sun once. A calendar year is 65 days. A solar or tropical year is 65 days, 5 hours, 8 minutes, and 6 seconds. Leap year occurs every years, when all the etra hours, minutes, and seconds of the solar year are added up to make an etra day. Investigations How many squares can be formed on a geoboard with sides parallel to the sides of the geoboard? Eperiment to find out. Record on geopaper. How many total squares can be formed on a geoboard? (Some squares can be made which do not have sides parallel to the sides of the geoboard.) Do you see any patterns? Is there a rule? How many squares (of all sizes) can you find on a checkerboard? Is there a pattern? (.0,.0, 5.0) Using Numbers in Powerful Ways Use your ruler to draw a quadrilateral, a pentagon, and a heagon, each with a perimeter of eactly 0 centimeters. Eplain what you did in completing this task. (.0) - = Fraction Fun Mrs.Allen gave some peanuts to her children to take to the zoo. Zach got half the peanuts, Wendy got a one-fourth of what was left. The twins, Ron anddon shared the remaining peanuts. If Ron got 5 peanuts, how many peanuts did Mrs. Allen have to give her children? For Further Study How many years would be in the following: olympiad, decade, score, (.0) century, millennium? How often would events occur if they are described as the following: annual, biannual, semiannual, semicentennial, centennial? 7

6 Directions: Decimal Dynamo (Your Goal: the smallest sum of 6 products). Roll number cubes (or one cube times). Use these numbers to create a -digit number and a whole number with a decimal. For eample, and 5. or 6 and.5 Record the numbers you create for each round.. Multiply these numbers and record the product for each round.. At the end of 6 rounds, add the products. The winner is the player with the smallest sum of the 6 products. Variation: The winner with the greatest sum. Round Round Round Round Round 5 Round 6 Round Round Round Round Round 5 Round 6 (.0) 8

7 Keeping Skills Sharp. times plus 0 =. $ $.9. If there are 580 feet in a mile, how many feet are in 8 miles?. Nearest thousand to: 68,9 5. What year is one century after 876? 6. If you have different shirts and different pairs of pants, how many possible outfits do you have? Lara made four trips to Raleigh. Each trip took a different amount of time. If these were the times for the trip, how many hours did she spend driving to Raleigh? 78min, 85min, 95min, 7min. - = Solve this! Waldo had some problems to solve. He did 0 of them on the first page. There were 6 problems on the second page. He did a third of the problems on the second page, leaving 8 more to do from both pages. How many problems were on the first page? (.0) 9

8 To the Teacher Grade 5 WEEK 9 Investigations: The number of squares on a geoboard is 0. This is found easiest by looking for a pattern. There are siteen squares, nine s, four s and one. Students should discover the perfect squares and then easily make the connection for the number of squares on a checkerboard. For Further Study: Olympiad: years Annual: yearly Decade: 0 years Score: 0 years Century: 00 years Millennium: 000 years Centennial: every 00 years Semicentennial: every 50 years Biannual: twice a year (not evenly spaced) Semiannual (twice a year equally spaced; every si months) SolveThis: problems on the first page. Fraction Fun: 60 peanuts Mental Math. (7 7 - ) 8. (65-0) 7 6. Is 5/6 - /6 greater than /?. Nearest whole number to: /6 5. Product of first odd numbers 6. Name of a 90 0 angle 7. Grams in 000 milligrams 8. Ounces in cups 9. Hours in 75 minutes 0. Which is longer, cm or in? Directions to Students: Number your paper from to 0. Write your answers as the questions are called out. Each question will be repeated only once. Keeping Skills Sharp. 9. $ 6.5.,0 feet. three = outfits 7. 6 r 8. 5 and a half hours 0

9 Week by Week MATHEMATICS Essentials Grade 5 WEEK 0 Math Trivia The moon's distance from the Earth is about 0,000 miles, which is about 0 times the diameter of the Earth. The moon travels at an orbital speed of about 0.6 miles per second, and its period of rotation is 7. days. What questions could be answered with these data? Using Numbers in Powerful Ways Play Mystery in the Back game. Your teacher will put a number or vocabulary word on your back. Try to guess the number by asking only yes or no questions to other students in class. You may only ask each student one question. Stand in the front of the room when you have solved the Mystery on your back! (.0) Investigations Research reveals that some rectangles are more pleasing to the eye than others. Divide the class into working groups. Some students could do research on the Golden Rectangle and prepare an oral report and/or a bulletin board. Another group could collect data by asking which rectangles people prefer. Draw some rectangles (e.,,, 5, 6, etc.) and survey people to see if one rectangle is more appealing than others. Keep colors constant since colors also affect visual preference. A third group of students could look for eamples of rectangles that have the to 5 ratio. (In advertisements note hands on a watch. If the 0 and are corners of a rectangle formed with 8 and at the other corners, would this rectangle be a golden one? Be ready to discuss the findings of your investigative groups. Fraction Fun Two thirds of a club voted for pizza as their favorite snack. One half of the other votes were for popcorn. The remaining votes were split evenly between candy and fruit. If fruit received five votes, how many are in the club? (.0) (.0) - = For Further Study Starting at 8:0 a.m. each day, the school bell rings every 55 minutes. What time is it on the fourth ring? (.0)

10 Circle Down Place a counter on each circle below, leaving one circle empty. Then try to remove all the counters but one in as few moves as possible. Moves are similar to checkers. They consist of jumping a counter over an adjacent counter in a straight line, landing in the empty circle beyond it. The counter that is jumped over is removed. A series of consecutive jumps with the same counter counts as a single move but they must always be in a straight line. No matter which circle is empty at the start, it is possible to remove all but one of the counters from the design. What is the fewest number of moves you can find?

11 Keeping Skills Sharp > N Find two values for N Write in a simpler form: Which part of a building is perpendicular to the floor? ceiling roof wall 6. Twenty students paid $ 0 each for a camping trip. $ 6.50 was returned to each student at the end of the trip. What was the final cost for each student? 7. What month is 0 months after July? 8. 6 n = 0 n =? - = Solve this! With the digits,,, and, how many fourdigit numbers can be formed if no digits can be repeated? What is the probability that a number is odd? is divisible by three? is greater than 500? (.0)

12 To the Teacher Grade 5 WEEK 0 Using Numbers In Powerful Ways: Make cards with numbers and/or vocabulary words for students to guess after taping the paper on their backs. Try to have students to guess with as few guesses as possible. Solve This: numbers;, 0,. Fraction Fun: 60 members Further Study: :0 PM Mental Math Directions to Students: Number your paper from to 0. Write your answers as the questions are called out. Each question will be repeated only once Epanded form for,60,00. Nearest whole number to: Smallest multiple of 6 between 50 and Name of triangle with equal sides 7. Milliliters in a -liter bottle 8. Pounds in 0 ounces 9. Centuries in 50 years 0. Product of first counting numbers Keeping Skills Sharp. 60,556. any number <.. 9 r or 9 /50. 8 r or 8 /8 5. wall 6. $ May 8. 9

Essentials. Week by. Week. Seeing Math. Fun with Multiplication

Essentials. Week by. Week. Seeing Math. Fun with Multiplication Week by Week MATHEMATICS Essentials Grade WEEK = 9 Fun with Multiplication JANUARY S M T W T F S 7 9 0 7 9 0 7 9 0 A rectangle of dates is boxed. Write the multiplication fact for this array. (.0a) Writing